A block of wood of density 0.6 gcm‾³, weighing 3.06N in air, floats freely in a liquid of density 0.9 gcm‾³. Calculate volume of the portion immersed (g = 10ms‾²)
A. 510cm³ B. 340cm³ C. 254cm³ D. 170cm³ Correct Answer: Option B B. 340cm³ Explanation V = M/D = 3.06/10 × 1000/0.9 =340Which of the following devices is used to determine the relative density of an acid?
A. manometer B. hydrometer C. hypsometer D. hygrometer Correct Answer: Option B B. hydrometerThe derived unit of pressure can be expressed as?
A. kgms‾² B. kg m‾¹s‾² C. kg m‾²s‾² D. kg m‾¹s² Correct Answer: Option B B. kg m‾¹s‾²Which of the following modes is the most economical method of transmitting electrical power over long distances?
A. alternating current at low voltage and high current B. alternating current at high voltage and high current C. alternating current at high voltage and low current D. direct current at low voltage and high current Correct Answer: Option C C. alternating current at...Products
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